Improvement in pumps



UNITED STATES PATENT" OFFICE. Y

GEORGE WASHINGTON JOHNSON, OF YARMOUTH, CANADA.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 173,223, dated February8, 1876 application filed December 18, 1875'.

To all whom it may concern:

Be it known that I, GEORGE WASHINGTON JOHNSON, of Yarmouth, in thecounty of Yarmouth and Province of Nova Scotia, and Dominion of Canada,have invented a new and useful Improvement in Pumps, of Whichthefollowing is a specification:

The figure is a vertical section of my improved pump.

The object of this invention is to improve jar or shock, to enable thepump to be conveniently sounded, and to enable an even motion of thepump-buckets to be produced when worked by a crank and fly-wheel.

The invention consists in the air-chamber placed directly over thesuction-pipe, made with an open top, and provided with a detachablecover; in the branch pipe connecting the suction-pipe andthe air-chamberwith the pump; and in the curved or bent lever, in combination with thebuckets, the pump, and the connecting-rod, pivoted to the crank of theshaft of the fiy-Wheel, as hereinafter fully described.

A represents the deck, B the stanchions, and O the fife-rail. D is thesuction-pipe. E is the air-chamber, which is placed directly above andin line with the suction-pipe D. The

air-chamber E is made with an open top,which is closed with aclose-fitting cover, F, so. that by removing the cover F the pipe may besounded or obstructions removed from it, and so that the arm or asuitable instrument may be passed, through the branch pipe G, into thespace beneath the valves H, to remove any obstructions that may havelodged there: I is the pump body or barrel, which is made;

semicylindrical in form, andin the lower part of which are secured thetwo valves H, opening upward. J are the two buckets, in each of which isa valve, and'which are rigidly connected, and Work upona shaft, K. Theends of the shaft K are secured to the walls of pump I. To the buckets Jis rigidly attachedv the end of the lever L. The lever L rises above themouth of the pump 1. is curved downward to, or nearly to, the level ofthe pivot of the buckets J, and is then bent'outward, and to it ispivoted the endof the connecting-rod M.

Several holes are formed in the lever L to A receive the pivoting-pin ofthe connecting-rod M, to enable the stroke of the pump to be reg ulatedas required. The upper end of the connecting-rod M is pivoted to ,thecrank of the shaft N, to which is attached a fly-wheel, O, v which mayhave a handle, P, attached to it to adapt it to serve as a crank-wheel.Having thus described my invention, I claim as new and desire to secureby Letters Pat- I ent 1. The air-chamber E, placed directly over thesuction-pipe D, made with an open top,

and provided with a detachable cover, F, in combination with pump I,substantially as herein shown and described;

2. The branch pipe Gr, connecting the pipe D and the air-chamber E withthe pump I, in combination with pump I, substantially as herein shownand described.

3. The curved or bent lever L, in combination with the buckets J, thepump I, and the connecting-rod'M, pivoted to the crank of the shaft N ofthe fly-wheel O, substantially as herein shown and described.

GEORGE WASHINGTON JOHNSON. Witnesses: 7

(lines. H. BRYANT, JOHN R. YOUNG.

